Physicochemical principles of preparation of U(VI) carbonate solutions for extraction reprocessing in the Carbex process
- Авторы: Tsivadze A.1, Chekmarev A.2,1, Boyarintsev A.2, Stepanov S.2,1
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Учреждения:
- Frumkin Institute of Physical Chemistry and Electrochemistry
- Mendeleev University of Chemical Technology of Russia
- Выпуск: Том 59, № 4 (2017)
- Страницы: 345-350
- Раздел: Article
- URL: https://journals.rcsi.science/1066-3622/article/view/224024
- DOI: https://doi.org/10.1134/S106636221704004X
- ID: 224024
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Аннотация
Physicochemical principles of preparation of U(VI) carbonate solutions in the step of oxidative dissolution of U3O8 and UO2 in the Carbex process are considered. Carbonate solutions with the U(VI) concentration higher than 100 g L–1, suitable for subsequent final purification of uranium by extraction, can be prepared under the conditions of formation of U(VI) carbonate–peroxide complexes in the course of dissolution with prevention of hydrolysis of U(VI) compounds. The behavior of impurities simulating some fission products in the course of oxidative dissolution was studied, and the decontamination factors of U(VI) from the chosen simulated fission products were determined.
Об авторах
A. Tsivadze
Frumkin Institute of Physical Chemistry and Electrochemistry
Email: chao_step@mail.ru
Россия, Leninskii pr. 31, korp. 4, Moscow, 119071
A. Chekmarev
Mendeleev University of Chemical Technology of Russia; Frumkin Institute of Physical Chemistry and Electrochemistry
Email: chao_step@mail.ru
Россия, Miusskaya pl. 9, Moscow, 125047; Leninskii pr. 31, korp. 4, Moscow, 119071
A. Boyarintsev
Mendeleev University of Chemical Technology of Russia
Email: chao_step@mail.ru
Россия, Miusskaya pl. 9, Moscow, 125047
S. Stepanov
Mendeleev University of Chemical Technology of Russia; Frumkin Institute of Physical Chemistry and Electrochemistry
Автор, ответственный за переписку.
Email: chao_step@mail.ru
Россия, Miusskaya pl. 9, Moscow, 125047; Leninskii pr. 31, korp. 4, Moscow, 119071